TY - JOUR
T1 - Continuous Calibration of Microring Weights for Analog Optical Networks
AU - Tait, Alexander N.
AU - De Lima, Thomas Ferreira
AU - Nahmias, Mitchell A.
AU - Shastri, Bhavin J.
AU - Prucnal, Paul R.
N1 - Funding Information:
This work was supported in part by the National Science Foundation (NSF) through the Division of Electrical, Communications and Cyber Systems under Grant 1247298 and in part by the NSF Graduate Research Fellowship Program through the Division of Graduate Education under Grant 1148900. Fabrication support was provided via the Natural Sciences and Engineering Research Council of Canada (NSERC) Silicon Electronic-Photonic Integrated Circuits (SiEPIC) Program. The devices were fabricated by Richard Bojko at the University of Washington Washington Nanofabrication Facility, part of the National Science Foundation's National Nanotechnology Infrastructure Network (NNIN).
Publisher Copyright:
© 2016 IEEE.
PY - 2016/4/15
Y1 - 2016/4/15
N2 - Continuously configurable weighted addition is a key function for multivariate analog signal processing. The wavelength-division multiplexed version of weighted addition based on microrings can apply the strengths of photonic integration, wideband photonic information processing, and multiwavelength networks toward new approaches to ultrafast analog distributed processing. In this letter, we experimentally demonstrate single-channel functionality using a 5-GHz signal, showing a continuous range of complementary (+/-) weighting in a bank of silicon microrings using a feedforward controller and balanced detection technique. Weight tuning accuracy with a dynamic range of 9.2 dB (i.e., 3.1 bits) is shown, and steps to improve performance are discussed. Systems of more microring weights and weight banks could address hitherto unsolvable problems in real-time radio frequency processing and high-performance control.
AB - Continuously configurable weighted addition is a key function for multivariate analog signal processing. The wavelength-division multiplexed version of weighted addition based on microrings can apply the strengths of photonic integration, wideband photonic information processing, and multiwavelength networks toward new approaches to ultrafast analog distributed processing. In this letter, we experimentally demonstrate single-channel functionality using a 5-GHz signal, showing a continuous range of complementary (+/-) weighting in a bank of silicon microrings using a feedforward controller and balanced detection technique. Weight tuning accuracy with a dynamic range of 9.2 dB (i.e., 3.1 bits) is shown, and steps to improve performance are discussed. Systems of more microring weights and weight banks could address hitherto unsolvable problems in real-time radio frequency processing and high-performance control.
KW - Photonic integrated circuits
KW - microresonators
KW - microwave photonics
KW - neural network hardware
KW - optical signal processing
KW - silicon photonics
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U2 - 10.1109/LPT.2016.2516440
DO - 10.1109/LPT.2016.2516440
M3 - Article
AN - SCOPUS:84963622297
SN - 1041-1135
VL - 28
SP - 887
EP - 890
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 8
M1 - 7377037
ER -